When the contract expires, the company does not renew it. I ask for a renewal, and I don't want compensation.

If you want to renew the contract but the company doesn't want to, you have only one way to talk to the company leader. You can work harder in the future and even reduce your salary if necessary. In addition, you have to talk about your difficulties. Without legal channels, it may not be easy for the company.

But if the company doesn't renew the contract, the company should compensate you. If the company doesn't let you go when it expires, you have established a de facto labor legal relationship with the company.